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Title:
CONCRETE PILES CORNER INSERTION LOCKING KEY COUPLING JOINT
Document Type and Number:
WIPO Patent Application WO/2010/014040
Kind Code:
A1
Abstract:
A concrete pile comprises of upper and lower piles are aligned by the centering dowel bar (22) fitted to the female steel pipe (23). Both piles are joined together by two locking end plates. The adjoining parts at the ends of the joining piles comprise of locking collar joint of a base plate with four corners of intrusion allowance for the insertion of locking key. When the locking keys are inserted for locking the end plates, there is a securing hole (25) at the corner of the base plate for the insertion of a securing wire/pin to secure the locking key.

Inventors:
CHONG AIK HENG (SG)
CHONG SIM HUAT EMMANUEL (SG)
Application Number:
PCT/SG2008/000285
Publication Date:
February 04, 2010
Filing Date:
July 31, 2008
Export Citation:
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Assignee:
CHONG AIK HENG (SG)
CHONG SIM HUAT EMMANUEL (SG)
International Classes:
E02D5/30; E02D5/24
Foreign References:
KR20060008250A2006-01-26
KR20050008599A2005-01-21
JP2000328556A2000-11-28
JPH07310317A1995-11-28
US4050211A1977-09-27
US4605340A1986-08-12
Download PDF:
Claims:
CLAIMS

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. The termination at a concrete pile comprises of:

secured termination end plates covering the ends of the pile section;

two kinds of termination end plates coexist within a concrete pile namely a male termination end plate and a female termination end plate at each end separately;

the male termination end plate will have a longer central protrusion for overall concrete pile centralised positioning when inserted into the female counter part base plate of the other concrete pile;

both kind of termination end plates will have four corners structured with a sunken quarter of a half sphere that has a tongue at the base;

each tongue will have a drill through hole at the corner tip;

a locking key for insertion through the protruding upper and lower tongues of the two joining base plates that will bind both the base plates together; and

A side pin for insertion through the holes at the tip of the tongues of both the adjoining tongues of the two joining base plate. All four corners of the base plate will have a hole each at the tip of the tongue for securing the insertion locking key at place.

2. A concrete pile as claimed in claim 1, has both its ends terminated with a base plate into which the pile section is cast, wherein the base plate has four corners structure in a sunken quarter of a half sphere, and wherein at the base of the sunken section is a protruding tongue in line with the side of the sunken quarter of a half sphere intrusion.

3. A concrete pile as claimed in claim 1 or claim 2, wherein the end session has a base plate into which the pile section is cast, wherein each base plate has one or all its corners with a sunken recessions.

4. A base plate as claimed in any preceding claim, wherein the any corners of the base plate are caste with intrusion of any shape and sizes.

5. A base plate as claimed in any preceding claim, wherein any comers of one or both the base plate are caste with intrusion and with an extension tongue at the base of the intrusion.

6. A locking key as claimed in any preceding claim, wherein the locking key is with central access and allowance for securing both the base plate tongues together.

7. A method of assembling a concrete pile section, each pile section comprising of:

a male and female base plate covering each end of the pile section;

the male base plate with the protruding pin inserted into the female base plate of the other concrete pile;

the base plates having the corners of plate counter sunk in a quarter of a semi sphere with a tongues at each corner in line with the leading edge of the sunken corners;

wherein both ends of the concrete pile are arranged in line with each other with each base plate facing each other.

wherein the locking keys are inserted at four corners to secure all the top and bottom base plates together; and

at each corners of the secured base plate are holes that will allow the insertion of the locking wire that will prevent the loosening of the locking keys.

Description:
Concrete Piles Corner Insertion Locking Key Coupling Joint

Description Of Invention

[0001] This invention relates to a corners insertion key to secure the end plates of the adjacent end of two concrete piles. In the construction for foundation in any building, an extended length continuous concrete pile may be formed by joining two or more pile units end to end. The requirement for piles of extended length is increasing as building structures are growing taller and stronger foundations are required. Precast concrete piles are commonly connected together during the process of piling.

[0002] A number of concrete pile joint arrangements have been disclosed in the past, and different joint design have been proposed for different applications. As such this invention is to address the design of the end plates that secure and hold concrete piles together. It refers to the design of the end plate and the corner locking collar method provided at the end of the pile.

[0003] Within a concrete pile there are two ends and this design refers to a male fitting at one end of the piles and a female fitting at the other end of the piles. Both ends of the piles will be fitted with male and female end plate. The end plate is being fixed to the axial reinforcing bars of the concrete pile. The overview of the joint and the end plate is shown in Figure 5.

[0004] The different between the male and female end plate is that the male end plate will have a male centering dowel bar and the female end plate will have a female steel pipe inlet. During the connection, the male centering dowel bar will fit into the female steel pipe inlet causing the two adjacent concrete piles to join together squarely. This is shown in Figure

5. [0005] At end of the concrete pile, the comers of the end plate collar are countersunk in one quarter of a semi sphere. The countersunk in corners each will have a lid at the side. At the corner of the lid will have a bold through securing hole as shown in Figure 5. The bold through securing hole is for the fitting of a securing wire/pin to secure the key within the slot for binding both the end plates together.

[0006] Figure 7 show an insertion key that will be inserted into the slot of the combine both side of the concrete pile end plate tongues. The insertion key when in place will be lock by the wires/pin that runs through the securing holes at the corner of the end plates. This will provide locking security to the key of the end plates.

The following drawings will illustrate the embodiments of the invention:

Figure 1 End Plate Detail (Male)

This figures shows the detail of the male end plate that will be normally be the top pile to be joined to the female end plate of the driven pile.

Figure 2 End Plate Detail (Female)

This figure shows the detail of the female end plate which will be the driven pile to receive the male end plate of the top pile.

Figure 3 Diagonal Cross Sectional View (Male) Detail 1

This is the diagonal cross sectional view of the male end plate where it shows the angular arc and the tongue where the locking key is to be inserted. Figure 4 Diagonal Cross Sectional View (Female) Detail 2

This is the diagonal cross sectional view of the female end plate where it shows the angular arc and the tongue where the locking key is to be inserted.

Figure 5 Assembly of the male and female end plate

The figure shows the assembly of the male and female of the concrete piles. The initial assembly will be the male centering dowel bar and the female mild steel fitting pipe inlet. The entire assembly will rest onto this initial positioning. After which the end plate of both the male and female plate will align with each other ready for the insertion of the locking keys and the securing wires/pin.

Figure 6 Top View of Assembly

This figure signify the top view of the assembled piles where the male pin and female inlets are fitted and the side quarter of a concave arc are featured.

Figure 7 Front and Top view of Locking Key

The locking key is shown in Figure 7 it shows a central access to secure the top and bottom end plate and also an alignment hole which is in line with the end plate securing holes for the insertion of securing wire/pin to fasten the locking key in position.